Fiberglass heater, with its excellent flexibility and longer life, composed of e fiberglass cover and e fiberglass braided resistance wire inside. This product is widely used on surfaces such as metal and glassware and ceramic for heating pipes, vessels etc. In labs, industry with easy installation. (1) service temperature:300 (max) for standard type;470(c) (max) for hi-temp type. (2) watt density:1.2 ~ 2.0 w/cm2. Special specifications, including length width watts and volts, are available upon request.